Chocablog has a great little HOWTO for making your own 15" high chocolate Dalek — they call it "extermination by chocolate!"
Place a band of white chocolate squares around the neck. You could of course pipe some melted white chocolate to create a similar effect but time was running out for me; birthday boy was about to come home from school and there I was, covered in chocolate and I hadn't even started on the proper party food yet.
Using melted plain chocolate, pipe details around the Dalek; stripes down the Jaffa cakes, and lines between the Malteser columns for eg. I made an effort to do this, but I know you can do better.
(via Neatorama)